Skrpro "unknown M221" after installed fw dual

More or less, I think! I did compile a new binary as well so maybe someone should test with a binary in the repo and the new config.ini file as well.

The instructions says to copy the files from the Copy to SD Card .... folders where there is a config.ini file:

But it doesn’t have the cnc_menu option among others (check the diff in the PR).
The complete config.ini seem to be this one: https://github.com/V1EngineeringInc/BIGTREETECH-TouchScreenFirmware/blob/master/TFT/src/User/config.ini

In my PR I just copied the contents of that file to the ones in the Copy to SD Card ... folders (and fixed the compilation error).